Nationalism is the idea that when an ethno-national group lives in a certain area, it could form a government in its name. It does NOT necessarily mean that other people living there should be kicked out or disfranchised. In fact, the actually-existing forms of liberal and civic nationalisms made sure to be attentive to this 'problem of minorities' and afford them equal citizenship rights. 

For better or worse, our world today has been based on this idea and we all live in nation-states. To wish this wasn't the case, it's just like wishing we lived in a world without states, borders, money, jealousy, etc -- a utopian wish, not a political program.

I think the reflection around network nations and network societies do offer powerful alternatives to the dominance of nation states model. And we are already experiencing their premises.

Artist-author from France •+• Creating the Solars, a sci-fi universe dedicated to arts, enlightenment and harmony with nature www.solaires.art

Network States

I do, and many people in crypto do, but of course not all. It's not giving  up with national identity, rather creating composable identities. 
The whole Ethereum or bitcoin phenomenon is in my opinion already this. My identity is french+ European+the network society-(ies) I choose.
Just here one can find : @zuzalu , /network-states , @greenpillnetwork , and others. 
These are innovation signals.

No, this is mostly talk. There is no evidence that people want to give up on their national identity, certainly not in favor of anything like that